Collection · 11 tools

Domain & DNS toolkit

Investigate a domain: who owns it, where it points, whether mail will be delivered, and whether it has a bad reputation.

Domain & DNS

Look up WHOIS registration data for a domain.

Look up A, AAAA, MX, NS, TXT, CNAME, SOA and CAA records for any domain.

Compare how two major public resolvers answer for a DNS record.

Resolve a hostname to its IPv4 and IPv6 addresses.

Look up the hostname for an IPv4 address with reverse DNS (PTR).

Identify and retrieve detailed information about Autonomous System Numbers (ASN), including organization names, countries, and assigned IP ranges.

Find known subdomains of a domain using a public host-search database.

Look up the mail (MX) servers for a domain and their priorities.

Check whether an email domain is on spam blacklists and has mail servers.

Check whether an IPv4 address is listed on major spam and abuse DNS blacklists.

Check whether a domain is flagged for malware or phishing.